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Maximally entangled proton and charged hadron multiplicity in Deep Inelastic Scattering

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arxiv 2207.09430 v2 pith:VDS2DPGY submitted 2022-07-19 hep-ph hep-ex

classification hep-phhep-ex
keywords comparisondatadeepentropyinelasticscatteringchargeddetermine
verification ladder T0 review T1 audit T2 compute T3 formal
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We study the proposal by Kharzeev-Levin to determine entanglement entropy in Deep Inelastic Scattering (DIS) from parton distribution functions (PDFs) and to relate the former to the entropy of final state hadrons. We find several uncertainties in the current comparison to data, in particular the overall normalization, the relation between charged versus total hadron multiplicity in the comparison to experimental results as well as different methods to determine the number of partons in Deep Inelastic Scattering. We further provide a comparison to data based on leading order HERA PDF as well as PDFs obtained from an unintegrated gluon distribution subject to next-to-leading order Balitsky-Fadin-Kuraev-Lipatov and Balitsky-Kovchegov evolution. Within uncertainties we find good agreement with H1 data. We provide also predictions for entropy at lower photon virtualities, where non-linear QCD dynamics is expected to become relevant.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Quantum entanglement within quarkonium

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Quark-antiquark entanglement entropy in quarkonium is derived from light-front wave functions, reduces to the Shannon entropy of TMDs, and shows strong polarization dependence for spin-1 mesons.

  2. Higher-order local constraints from reciprocal symmetry and entanglement entropy of charged-particle multiplicity distributions in $pp$ collisions

    hep-ph 2026-05 conditional novelty 5.0 of 10

    The reciprocal symmetry of the KNO-violating term yields the new constraint δ₃=0 at n=⟨n⟩ (untestable at present precision), fails globally at 13 TeV, and the derived entropy S=ln⟨n⟩+I₀−½∫e^{-z}f_s²dz matches ATLAS da...

  3. Investigating QCD Dynamical Entropy in high-energy nuclear collisions

    hep-ph 2025-07 conditional novelty 4.0 of 10

    Using geometric scaling and Glauber-Gribov nuclear gluon distributions, the authors find that the QCD dynamical entropy in proton-nucleus collisions is essentially independent of the atomic mass number A, while the en...

  4. Charged particle multiplicity distributions derived from the Principle of Maximal Entropy

    hep-ph 2025-05 reject novelty 3.0 of 10

    The paper claims charged particle multiplicity distributions follow from maximizing Shannon entropy with a fixed mean, yielding exponential tails and, after Poisson-Gamma mixing, the negative binomial distribution.

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